Mac: It's always a bit annoying when you're reading a long article (or just spacing out) and your computer cuts to the screensaver because you haven't touched the mouse in a while. Should I Sleep is an app that keeps your display from going to sleep as long as you're sitting in front of it by using facial recognition.

Before your Mac goes to sleep (or to a screensaver), the app quickly checks your webcam to see if you're still sitting there. If you are, Should I Sleep prevents the computer from sleeping. It has notifications to let you know about this, but you can disable them in the preferences. Out of the box, that's all it does, but you can buy some in-app purchases to get more options, including detecting any motion from the camera, an external display, or sound activity. Still, the face detection alone works just fine, and it's free. If you find yourself constantly reaching for the mouse or keyboard before your display goes to sleep, Should I Sleep is a handy program to have around.